THE region's peak residents' association has questioned the capacity of the massive Caloundra South development to generate jobs to support its 50,000 population.
In its submission to Stockland's public environment report, which will be presented to the Federal Government, OSCAR describes as fanciful claims by the developer that Caloundra South will create 39,000 jobs.
Stockland was required to provide employment and economic information in its report to the government.
OSCAR president Ian Christesen said Stockland would need to create an economic miracle to deliver those numbers.
"The Stockland report says that this additional 50,000 people will create 39,000 jobs, which is a new created job for every 1.3 additional people, while presently the population of the Sunshine Coast has a job for every 2.3 resident population," he said.
"No economic development strategy has been produced to back up the claims or identify how the jobs are to be created.
"A real danger is that the development becomes a North Lakes where residents commute into Brisbane. The highway is at peak capacity and with no rail upgrade planned until after 2030, this is a recipe for gridlock."
OSCAR was also critical of other economic information in the report.
It said claims the development would have a combined direct and indirect investment into the regional economy of more than $20 billion meant that each new person coming into Caloundra South would create a $400,000 investment into the economy.
Mr Christesen said OSCAR was also concerned that the Caloundra South development would oversupply a market that had already witnessed an eight-year downward trend in population growth.
OSCAR wants performance-based conditions of approval that are monitored and publicly reported.
Outcomes would determine whether further staged approvals should be granted.
It argues the development should be predicated on the provision of critical transport infrastructure.
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